CN104614039B - The formula base that is connected of urea sensor - Google Patents
The formula base that is connected of urea sensor Download PDFInfo
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- CN104614039B CN104614039B CN201510057625.6A CN201510057625A CN104614039B CN 104614039 B CN104614039 B CN 104614039B CN 201510057625 A CN201510057625 A CN 201510057625A CN 104614039 B CN104614039 B CN 104614039B
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- chassis
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- gasket
- urea sensor
- urea
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Abstract
The formula base that is connected of urea sensor, including metal chassis, metal chassis is raised provided with chassis, the raised top in chassis is provided with chassis Upper gasket, the side wall of chassis Upper gasket is provided with the groove that Open Side Down, chassis is raised in the grooves, the raised through hole madial wall in chassis is in contact with the madial wall of groove, chassis lower gasket is provided with chassis is raised, electronics pipe mounting seat sequentially passes through the through hole at chassis Upper gasket center, the through hole of chassis convex center, the through hole at chassis lower gasket center, the top of electronics pipe mounting seat and the electron tube madial wall of urea sensor are connected, the upper surface of chassis Upper gasket is in contact with the lower surface of electron tube, the lateral wall of the through hole madial wall of chassis Upper gasket and the through hole madial wall of chassis lower gasket with electronics pipe mounting seat is in contact.Compact conformation of the present invention, high working efficiency.Using the present invention, be conducive to the dissolving of crystallization urea in urea box, it is adaptable to various urea sensors, be particularly suitable for use in U-shaped urea sensor.
Description
Technical field
The present invention relates to a kind of formula base that is connected of urea sensor.
Background technology
Urea sensor is also referred to as urea tank level indicator, dense in order to reduce discharged nitrous oxides contained by exhaust gas from diesel vehicle
Degree, the reply whole world increasingly severe exhaust emission standard, selective catalytic reduction system operating (SCR) arises at the historic moment.SCR system is utilized
Urea liquid catalyzing and reducing nitrogen oxides, urea tank level indicator is diesel vehicle SCR system Aided design, for detecting urea
Solution level.
At present, for the exhaust emission standard of state four, at exhaust gas from diesel vehicle discharge, SCR system is increased, tail gas is from diesel vehicle
Turbine come out after enter exhaust mixing tube, by the urea measuring and injecting device installed on mixing tube, spray into aqueous solution of urea,
Urea produces NH after hydrolysis and pyrolytic reaction occur at high temperature3, NH is utilized on SCR system catalyst surface3Reduce NOx, exclude
N2, unnecessary NH3It is also reduced to N2, with prevent leakage.Generally, 5L liquid can be consumed while consuming 100L fuel oils
Aqueous solution of urea.
- 11 ° of crystallizations at one atm of urea for vehicle concentration 32.5%, when weather is colder, when temperature is relatively low,
Crystalline polamer often occurs in the urea in urea box especially on the night of northern China, diesel vehicle, now, if need to open
Dynamic diesel engine, then need to by engine cooling water, by the hot water line of urea sensor by the cooling water of outer
It is incorporated into urea box, to be heated using the heat of cooling water to the urea liquid in urea box, prevents urea liquid knot
It is brilliant.But, for existing urea sensor, when cooling water is introduced in urea box, the heat of cooling water is often urinated
Electronics pipe mounting seat on the base of plain sensor absorbs a part, and the solute effect to crystallization urea in urea box is simultaneously bad.
In addition, can be collided often between the electronics pipe mounting seat on base loaded on the floating drum on electron tube, electron tube easily loosens,
Floating drum is easily broken, and influences the service life of urea sensor.
The content of the invention
The technical problem to be solved in the present invention is that the drawbacks described above for overcoming prior art to exist is conducive to urine there is provided one kind
The formula base that is connected of the urea sensor of the dissolving of crystallization urea in plain case.
The technical solution adopted for the present invention to solve the technical problems is：
The formula base that is connected of urea sensor, including metal chassis, metal chassis are raised provided with chassis, and chassis is convex
The center of rising is provided with through hole, and the raised top in chassis is provided with chassis Upper gasket, and the side wall of chassis Upper gasket is provided with the groove that Open Side Down,
Chassis projection is located in the groove, and the raised through hole madial wall in chassis is in contact with the madial wall of the groove, and chassis is raised
Interior to be provided with chassis lower gasket, the center of chassis Upper gasket and the center of chassis lower gasket are provided with through hole, electronics pipe mounting seat according to
Secondary through hole, the through hole of chassis convex center, the through hole at chassis lower gasket center through chassis Upper gasket center, electron tube is installed
The top of seat and the electron tube madial wall of urea sensor are connected, and the upper surface of chassis Upper gasket connects with the lower surface of electron tube
Touch, the lateral wall of the through hole madial wall of chassis Upper gasket and the through hole madial wall of chassis lower gasket with electronics pipe mounting seat connects
Touch.
Further, the chassis Upper gasket and chassis lower gasket are heat insulating mattress.
Further, the material of the heat insulating mattress is PA66（Polyhexamethylene adipamide）, good heat-insulation effect.
Further, the electronics pipe mounting seat bottom is provided with locking device.
Further, the locking device is stop nut, and electronics pipe mounting seat bottom is provided with external screw thread, stop nut inwall
Provided with internal thread, electronics pipe mounting seat is connected through a screw thread with stop nut.
Further, the stop nut be nylon locking nut, can effectively improve whole understructure stability and
Fastness.
Further, the stop nut upper surface is in contact with the lower surface of chassis lower gasket.
Further, it is provided with screen pack assembly below the electronics pipe mounting seat.
Further, the top of the electronics pipe mounting seat and the electron tube madial wall of urea sensor are solid by welding manner
Even.
The present invention is pacified by the through hole madial wall of chassis Upper gasket and the through hole madial wall of chassis lower gasket with electron tube
The lateral wall of dress seat is in contact, and the chassis projection of metal chassis realizes electron tube in the groove of chassis Upper gasket side wall
Zero between mounting seat and metal chassis contacts, by under chassis Upper gasket and chassis between electronics pipe mounting seat and metal chassis
Pad is isolated；The heat conduction between cooling water and metal chassis in the hot water line for protecting urea sensor that can be well
Property, be conducive to the heat transfer effect between the cooling water and metal chassis in heat transfer, the hot water line of urea sensor to increase,
The heat absorption of electronics pipe mounting seat is avoided, so that the rapidly just crystallization urea solid dissolving of urea box inner bottom part is into liquid
State.
Compact conformation of the present invention, high working efficiency.Using the present invention, be conducive to the dissolving of crystallization urea in urea box, fit
For various urea sensors, be particularly suitable for use in U-shaped urea sensor.
Brief description of the drawings
Fig. 1 is the profile of the formula base that is connected of urea sensor of the present invention；
Fig. 2 is the packing figure of the formula base that is connected of urea sensor of the present invention；
Fig. 3 is the structural representation of UU shape urea sensors.
In figure：1 --- metal chassis；2 --- the chassis of metal chassis is raised；3 --- the through hole of chassis convex center；
4 --- chassis Upper gasket；5 --- the groove of chassis Upper gasket side wall；6 --- chassis lower gasket；7 --- electronics pipe mounting seat；
8 --- the electron tube of urea sensor；9 --- stop nut；10 --- screen pack assembly；11 --- floating drum.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described.
The present embodiment is elaborated with U-shaped urea sensor.
Referring to the drawings, the formula base that is connected of urea sensor includes metal chassis 1, and metal chassis 1 is provided with chassis
Projection 2, chassis 2 centers of projection are provided with through hole 3, and the top of chassis projection 2 is provided with chassis Upper gasket 4, and the side wall of chassis Upper gasket 4 is set
There is the groove 5 that Open Side Down, chassis projection 2 is located in the groove 5, the madial wall of through hole 3 of chassis projection 2 and the groove 5
Madial wall be in contact, chassis lower gasket 6 is provided with chassis projection 2, in the center and chassis lower gasket 6 of chassis Upper gasket 4
The heart is provided with through hole, electronics pipe mounting seat 7 sequentially pass through the through hole at the center of chassis Upper gasket 4, the through hole at raised 2 centers in chassis,
The through hole at the center of chassis lower gasket 6, the top of electronics pipe mounting seat 7 and the madial wall of electron tube 8 of urea sensor are connected, chassis
The upper surface of Upper gasket 4 is in contact with the lower surface of electron tube 8, the through hole madial wall of chassis Upper gasket 4 and chassis lower gasket 6
Lateral wall of the through hole madial wall with electronics pipe mounting seat 7 is in contact.
The chassis Upper gasket 4 and chassis lower gasket 6 are heat insulating mattress.
The material of the heat insulating mattress is PA66（Polyhexamethylene adipamide）, good heat-insulation effect.
The bottom of electronics pipe mounting seat 7 is provided with locking device.The locking device is stop nut 9, and electron tube is installed
7 bottoms of seat are provided with external screw thread, and the inwall of stop nut 9 is provided with internal thread, and electronics pipe mounting seat 7 is connected with stop nut 9 by screw thread
Connect.
The stop nut 9 is nylon locking nut, can effectively improve the stability and fastness of whole understructure.
The upper surface of stop nut 9 is in contact with the lower surface of chassis lower gasket 6.
The lower section of electronics pipe mounting seat 7 is provided with screen pack assembly 10.
The top of the electronics pipe mounting seat 7 and the madial wall of electron tube 8 of urea sensor are connected by welding manner.
The present invention by the through hole madial wall of the through hole madial wall of chassis Upper gasket 4 and chassis lower gasket 6 and electron tube
The lateral wall of mounting seat 7 is in contact, and the chassis projection 2 of metal chassis 1 is located in the groove 5 of the side wall of chassis Upper gasket 4, realizes
Zero between electronics pipe mounting seat 7 and metal chassis 1 contacts, by being padded on chassis between electronics pipe mounting seat 7 and metal chassis 1
Piece 4 and chassis lower gasket 6 are isolated；The hot water line of urea sensor can well be protected（Not shown in figure）In cooling
Thermal conductivity between water and metal chassis 1, is conducive to the cooling water and metal bottom in heat transfer, the hot water line of urea sensor
Heat transfer effect increase between disk 1, it is to avoid the heat absorption of electronics pipe mounting seat 7, in favor of rapidly just urea box（In figure
It is not shown）The crystallization urea solid dissolving of inner bottom part is into liquid.
The present invention, with being in contact, realizes metal bottom also by the upper surface of chassis Upper gasket 4 and the lower surface of electron tube 8
Disk 1 is contacted with the zero of the electron tube 8 of urea sensor；The upper surface of stop nut 9 is in contact with the lower surface of chassis lower gasket 6,
Metal chassis 1 is realized with stop nut 9 zero contacts；Pass through bottom respectively between metal chassis 1 and electron tube 8, stop nut 9
Disk Upper gasket 4, chassis lower gasket 6 are separated, and stop nut 9 and electron tube 8 do not interfere with the heat conductivility of metal chassis 1.
Separated, be conducive to by chassis Upper gasket 4 between floating drum 11 and base on electron tube 8 loaded on urea sensor
Reduce the impact strength between floating drum 11 and base, extend the service life of whole urea sensor.The present invention passes through locking spiral shell
Mother 9 make it that base is more firm, is improving understructure stability simultaneously, and protects the thermal conductivity of base well, allows whole
The heat conductivility increase of individual sensor, can effectively shorten the time of defrosting crystallization urea.
Claims (9)
1. the formula base that is connected of urea sensor, including metal chassis, it is characterised in that the metal chassis is provided with bottom
Disk is raised, and chassis convex center is provided with through hole, and the raised top in chassis is provided with chassis Upper gasket, and the side wall of chassis Upper gasket, which is provided with, to be opened
The downward groove of mouth, chassis projection is located in the groove, the madial wall phase of chassis raised through hole madial wall and the groove
Contact, chassis is raised interior provided with chassis lower gasket, and the center of chassis Upper gasket and the center of chassis lower gasket are provided with through hole, electricity
Sub- pipe mounting seat sequentially pass through the through hole at chassis Upper gasket center, the through hole of chassis convex center, chassis lower gasket center it is logical
Hole, the top of electronics pipe mounting seat and the electron tube madial wall of urea sensor are connected, the upper surface of chassis Upper gasket and electronics
The lower surface of pipe is in contact, and the through hole madial wall of chassis Upper gasket and the through hole madial wall of chassis lower gasket are installed with electron tube
The lateral wall of seat is in contact.
2. the formula base that is connected of urea sensor according to claim 1, it is characterised in that the chassis Upper gasket
Heat insulating mattress is with chassis lower gasket.
3. the formula base that is connected of urea sensor according to claim 2, it is characterised in that the heat insulating mattress
Material is polyhexamethylene adipamide.
4. the formula base that is connected of urea sensor according to claim 1 or 2, it is characterised in that the electron tube
Mounting seat bottom is provided with locking device.
5. the formula base that is connected of urea sensor according to claim 4, it is characterised in that the locking device is
Stop nut, electronics pipe mounting seat bottom be provided with external screw thread, stop nut inwall be provided with internal thread, electronics pipe mounting seat with it is locking
Nut is connected through a screw thread.
6. the formula base that is connected of urea sensor according to claim 5, it is characterised in that the stop nut is
Nylon locking nut.
7. the formula base that is connected of urea sensor according to claim 5, it is characterised in that on the stop nut
End face is in contact with the lower surface of chassis lower gasket.
8. the formula base that is connected of urea sensor according to claim 1 or 2, it is characterised in that the electron tube
Screen pack assembly is provided with below mounting seat.
9. the formula base that is connected of urea sensor according to claim 1 or 2, it is characterised in that the electron tube
The top of mounting seat and the electron tube madial wall of urea sensor are connected by welding manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510057625.6A CN104614039B (en) | 2015-02-04 | 2015-02-04 | The formula base that is connected of urea sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510057625.6A CN104614039B (en) | 2015-02-04 | 2015-02-04 | The formula base that is connected of urea sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104614039A CN104614039A (en) | 2015-05-13 |
| CN104614039B true CN104614039B (en) | 2017-07-14 |
Family
ID=53148589
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510057625.6A Active CN104614039B (en) | 2015-02-04 | 2015-02-04 | The formula base that is connected of urea sensor |
Country Status (1)
| Country | Link |
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| CN (1) | CN104614039B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104949702B (en) * | 2015-06-16 | 2017-04-26 | 湖南菲尔斯特传感器有限公司 | Spiral tube-type fixed base for urea sensor |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008203243A (en) * | 2007-01-22 | 2008-09-04 | Ngk Spark Plug Co Ltd | Urea water sensor |
| CN102192773A (en) * | 2011-03-09 | 2011-09-21 | 潍柴动力股份有限公司 | Urea liquid level sensor |
| JP4855854B2 (en) * | 2006-07-10 | 2012-01-18 | 川澄化学工業株式会社 | Chemiluminescent urea sensor for hemodialysis and urea measurement method in hemodialysis |
| CN103759789A (en) * | 2013-12-17 | 2014-04-30 | 合肥邦立电子股份有限公司 | Urea sensor structure |
| CN204388951U (en) * | 2015-02-04 | 2015-06-10 | 湖南菲尔斯特传感器有限公司 | A kind of formula that is connected and fixed base of urea sensor |
| WO2016156151A1 (en) * | 2015-03-27 | 2016-10-06 | Wema System As | Suction tube, urea sensor with a suction tube and selective catalytic reduction (scr) system with a urea sensor and a suction mechanism and suction tube |
-
2015
- 2015-02-04 CN CN201510057625.6A patent/CN104614039B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4855854B2 (en) * | 2006-07-10 | 2012-01-18 | 川澄化学工業株式会社 | Chemiluminescent urea sensor for hemodialysis and urea measurement method in hemodialysis |
| JP2008203243A (en) * | 2007-01-22 | 2008-09-04 | Ngk Spark Plug Co Ltd | Urea water sensor |
| CN102192773A (en) * | 2011-03-09 | 2011-09-21 | 潍柴动力股份有限公司 | Urea liquid level sensor |
| CN103759789A (en) * | 2013-12-17 | 2014-04-30 | 合肥邦立电子股份有限公司 | Urea sensor structure |
| CN204388951U (en) * | 2015-02-04 | 2015-06-10 | 湖南菲尔斯特传感器有限公司 | A kind of formula that is connected and fixed base of urea sensor |
| WO2016156151A1 (en) * | 2015-03-27 | 2016-10-06 | Wema System As | Suction tube, urea sensor with a suction tube and selective catalytic reduction (scr) system with a urea sensor and a suction mechanism and suction tube |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104614039A (en) | 2015-05-13 |
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